commented a few todos

AndroidSockets/app/src/main/java/edu/uw/cs/androidsockets/NetworkInterface.java

@@ -20,6 +20,8 @@ import java.net.UnknownHostException;
  *          }
  *      }
  * );
+ *
+ * TODO: might need to figure out how to get data back to a given thread.
  */
 public class NetworkInterface {
     private static NetworkInterface instance;